Update README.md

Author: robswc

README.md

@@ -1,7 +1,7 @@
 # quickbase-json-api-client
 
 ![build](https://img.shields.io/github/workflow/status/robswc/quickbase-json-api-client/Python%20application?style=for-the-badge)
-![size](https://img.shields.io/github/size/robswc/quickbase-json-api-client/quickbase_json/client.py?style=for-the-badge)
+![size](https://img.shields.io/github/languages/code-size/robswc/quickbase-json-api-client?style=for-the-badge)
 ![license](https://img.shields.io/github/license/robswc/quickbase-json-api-client?style=for-the-badge)
 
 Unofficial Quickbase JSON API wrapper for python